Page 297 - NS-2 Textbook

292 NAUTICAL SCIENCES

Astronomical laboratories and observatories on the 5. What is breccia?
Moon would be unhindered by the atmosphere of Earth. 6. What are the maria, and how did they get that name?
They would be able to probe greater distances into space. 7. A. What are mascons?
Corrununications relays or missile and transportation con- B. How were they discovered?
trol stations could serve in a wide variety of constructive 8. What is "moonlight"?
ways. Military applications are sure to be developed also, 9. What probably caused most Moon craters?
though one hopes that the steps of hwnanity into outer 10. What significant discovery about the Moon was
space will be devoted to peaceful purposes. II made in 1996?
11. What are rays and rilles on the Moon?
12. Explain the basic difference between a moonquake
CRITICAL THINKING and an earthquake.
13. A. What are the phases of the Moon?
1. What is currently the major cause of interest in travel-
B. What does" gibbous" mean?
ing to and exploring the Moon?
14. What causes a lunar eclipse to occur?
2. What are the two prevailing scientific theories of the
15. What are some practical reasons for exploring the
formation of the Moon? Explain each.
Moon?
Study Guide Questions Vocabulary
1. What is currently the most widely accepted theory of astronaut reflectance
how and when the Moon was formed? moonquake crater
2. Why do we on Earth always view the same side of seismometer gibbous
the Moon? breccia eclipse
3. Why is there no gradual daily temperature change wax, wane
on the Moon? igneous rock
4. What causes erosion on the Moon's surface? mare, maria